Is it a must to see High Risk Doctor with fraternal twins?

Ke
I am almost 19 weeks pregnant with boy/girl twins and everyone keeps asking me if I am seeing a high risk doctor, I am not I am seeing a regular ob/gyn and feel quite comfortable with her as she has twins herself and deals with most of the twins in the practice. But I am wondering if I should just go talk to a high risk doctor for peace of mind?